there is a custom kernel on my repository that fixes the FN keys release on Samsung N140 (along with other models).
I also applied a patch which should fix the freezing problem on Samsung N130/N140 (I grabbed it from the archlinux wiki, where it's reported as a fix, however I'm yet waiting for reports from N130/N140 users, so I don't know if it really fixes the problem).
Unfortunately, this is all I can say, I can't give you the assurance that the freezing problem is completely fixed. I'm sorry.
Anyway, if you decide to go for a try, follow the instructions in this thread
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